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Questions tagged [failover]

The tag has no usage guidance.

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Windows Server 2016 Failover cluster manager: multiple online servers issue

I was wondering if anybody experienced and/or resolved the following issue: Windows Failover cluster Setup: Two Windows 2016 server nodes: A and B with current Windows patches. Generic Application ...
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0answers
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PostgreSQL Native Replication | Master - Master

I am configuring a high availability environment with Debian 9.4 machine, in which I have a Heartbeat working and need to include native PostgreSQL 9.6 replication, but by default this method of ...
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1answer
55 views

Linux application monitoring tool [closed]

I have a Java application(fat jar) that runs on the Linux Ubuntu instance and fails from time to time. The application has embedded web server and exposes health check URL. I need to implement some ...
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1answer
124 views

Hyper V fail over cluster

I have two Hyper V host. One with Intel adapter and other with Broadcom. Is this configuration supported.? While running validation test I am getting error message. Node 'HOST1.poc.lab' is missing a ...
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298 views

dns failover for internal/LAN domain-names

I would like to switch to cloudfare's 1.1.1.1 nameserver for a number of reasons. However, when my machine is on my company's network, i need to resolve some 'internal' domain names (foo.company.com, ...
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1answer
154 views

Dual Wan - Failover not working

I have 2 ISPs connected to a dual wan Linksys LRT224. On the LRT224 I configured the failover as shown: However, failover does not work if WAN1 fails (fiber optic is down), if physically I ...
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2answers
41 views

Instant hostname failover - continous pinging when machines switch?

I'm new here, please bear with me. I'm a trial period employee at a IT company which focuses on server solutions, failovers etc. I had a task to ping a machine through DNS, whenever machine shuts ...
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1answer
91 views

Maximizing security - DMZ enabled WAN failover

Context: 20 person shop. Internet uptime is critical. Solution is to use LTE service to backup main Internet service. Please see Exhibit 1 for diagram. Problem: System works (connection fails over to ...
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0answers
345 views

OpenBSD multipath routing ifstated trouble

I'm trying to manage a "failover" setup for NAT-ed private network with two not very stable WAN (LTE/3g) connections. Topology is quite typical: hosts from within the internal network connect to the ...
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1answer
242 views

MultiWAN has slow failover

I have the latest Tomato Firmware using the MAX option. I have the device configured for failover to the 2nd WAN if the main internet connection for WAN 1 goes down. The issue I have is that WAN 1 ...
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1answer
681 views

mikrotik multiple wan incoming traffic

i'm writing here to ask you if you have ever had an issue similar to mine. I'm using a Mikrotik RB750UP for my office. The router is managing 3 different WANs. I'm not using any balancing or bonding ...
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1answer
32 views

How can I know ASAP when my PC loses Internet connectivity and I'm away from the PC? [duplicate]

I have a PC with a USB humidity logger, that measures humidity in our factory. When the humidity is too high, the PC sends me an email alerting me to the problem. Sometimes the internet goes down, or ...
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1answer
78 views

How can I know ASAP when my PC loses Internet connectivity and I'm away from the PC [closed]

I need to know ASAP when my PC loses Internet connectivity. It is of no use to me if my PC waits until it's back online and then emails/SMSs me that service has been restored. Is there a way to ...
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1answer
1k views

Failover between multiple gateways

I have a CentOS server running Centreon (a monitoring solution similar to Nagios) to monitor devices in multiple networks. The server could access the internet via 4 different gateways/routers, each ...
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1answer
1k views

IIS failover Clusters?

I'm new to servers and stuff(I'm a programmer not a server guy) and I have a question about IIS failover clustering. I have two IIS servers up and running, and they're identical. I want to set up the ...
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1answer
3k views

Windows 10 software RAID mirrored boot volume: How to make second disk bootable when first isn't present?

I'm searching and researching for answers for days now with little success. I've setup a Windows 10 software RAID-1 nurrir with 2 ADATA 240gb SSD disks. I expected that when 1 drive fails, then the ...
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1answer
129 views

Move from keepalived to HAProxy

I have four web server under two keepalived load balance server, so I can be sure that the active keepalived server will load balance the traffic on my four web servers, and when it fails the passive ...
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1answer
6k views

DNS load balancing with multiple IPs on the same domain in GoDaddy

Looking for a cheaper solution than amazon CloudFront, I placed two "A" records with different IPs to different servers on the same subdomain in a NameSever managed by GoDaddy in order to achieve some ...
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0answers
50 views

Syncronize /etc directory between two debian servers

I have two identical debian servers, which I want to keep in sync in order to switch to the 2nd in case of failure of the 1st. I'm going to sync installed debian packages, data directories, mysql (...
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2answers
144 views

Internet failover strategy while hosting services with a staticip

Given you have two networks with statics ips: network A.) 66.xxx.xxx.9 (to reach this network DNS entry is myservice.mydomain.com) and network B.) 66.xxx.xxx.29 ((to reach this network DNS entry ...
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3answers
151 views

Why is UPS technology unreliable? [closed]

Following the UPS issue at SO today I recall my experiences with UPS (uninteruptable power supply) systems in the work place. Typically we would arrive at work in the morning and find all systems ...
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3answers
23k views

Failover two IP addresses and one DNS record

My mail server has two WAN interfaces and I need to set up one DNS A record for my Exchange clients. In case of connection failure of one interface I wish to use the other interface, but how to set up ...
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1answer
206 views

Can a consumer-level (i.e. cheap) UPS trigger a custom script on power failure on Linux?

I am essentially trying to build is a poor mans server failover solution. The non-profit organization I am part of is planning to host several web applications. In order to save on hosting costs we ...
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1answer
2k views

CentOS DHCP server failover won't give out leases

I have followed this tutorial: http://www.madboa.com/geek/dhcp-failover/ However, I can not seem to get a lease at my windows client. I have set both servers (CentOS 6.2) in virtual machines, ...
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1answer
80 views

Can NAT capable modem/router be linked for failover?

There are a total of 7 systems on the network. The network has evolved from two small shops (3-4 computers each) to a single one with a sum total of 7 systems. Historically there were two ISP (which ...
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1answer
794 views

Software load balancing fail-over vs hardware [closed]

Please correct me, but my understanding is that with software load balancing a service must be run on each server while there is one DS that notifies the other servers that a server has gone down and ...
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1answer
80 views

ADSL Connections

Can you have two ADSL connections on a single phone line? Or by law of IT, do two Broadband connections require two separate phone lines and BT master sockets?